Optimize nginx & recordings (#4688)

* Add segment duration metadata

* Use faststart only for kept segments

* Add more options for performance

* Build nginx locally

* Build nginx in dockerfile and enable threaded vod handling

* Use DASH instead of hls

* Allow player to continue on error

* Undo DASH change

* Fix typo

* Correct log

* Fix bad comments

* Fix indentation

* Preload stream

* remove unused

* Fix spacing

* Fix tabs / sspaces

* Retab

* More cleanup

frigate/http.py

@@ -32,7 +32,7 @@ from peewee import SqliteDatabase, operator, fn, DoesNotExist
 from playhouse.shortcuts import model_to_dict
 
 from frigate.config import FrigateConfig
-from frigate.const import CLIPS_DIR, RECORD_DIR
+from frigate.const import CLIPS_DIR, MAX_SEGMENT_DURATION, RECORD_DIR
 from frigate.models import Event, Recordings
 from frigate.object_processing import TrackedObject
 from frigate.stats import stats_snapshot
@@ -1050,6 +1050,7 @@ def vod_ts(camera_name, start_ts, end_ts):
 
     clips = []
     durations = []
+    max_duration_ms = MAX_SEGMENT_DURATION * 1000
 
     recording: Recordings
     for recording in recordings:
@@ -1060,7 +1061,7 @@ def vod_ts(camera_name, start_ts, end_ts):
         if recording.end_time > end_ts:
             duration -= int((recording.end_time - end_ts) * 1000)
 
-        if duration > 0:
+        if 0 < duration < max_duration_ms:
             clip["keyFrameDurations"] = [duration]
             clips.append(clip)
             durations.append(duration)
@@ -1076,7 +1077,9 @@ def vod_ts(camera_name, start_ts, end_ts):
         {
             "cache": hour_ago.timestamp() > start_ts,
             "discontinuity": False,
+            "consistentSequenceMediaInfo": True,
             "durations": durations,
+            "segment_duration": max(durations),
             "sequences": [{"clips": clips}],
         }
     )